Subtract 2/24 from 90/30, Solve 3 0/30

Subtract 2/24 from 90/30

1^st number: 3 0/30, 2^nd number: 2/24

90/30 - 2/24 is 35/12.

Find the least common denominator or LCM of the two denominators:
LCM of 30 and 24 is 120

Next, find the equivalent fraction of both fractional numbers with denominator 120
For the 1st fraction, since 30 × 4 = 120,
90/30 = 90 × 4/30 × 4 = 360/120
Likewise, for the 2nd fraction, since 24 × 5 = 120,
2/24 = 2 × 5/24 × 5 = 10/120
Subtract the two like fractions:
360/120 - 10/120 = 360 - 10/120 = 350/120
After reducing the fraction, the answer is 35/12
In mixed form: 211/12

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